/*
 tableExport.jquery.plugin

 Copyright (c) 2015 hhurz, https://github.com/hhurz/tableExport.jquery.plugin

 Original work Copyright (c) 2014 Giri Raj, https://github.com/kayalshri/
 Licensed under the MIT License, http://opensource.org/licenses/mit-license
*/

(function ($) {
    $.fn.extend({
        tableExport: function (options) {
            var defaults = {
                consoleLog: false,
                csvEnclosure: '"',
                csvSeparator: ',',
                csvUseBOM: true,
                displayTableName: false,
                escape: false,
                excelstyles: ['border-bottom', 'border-top', 'border-left', 'border-right'],
                fileName: 'tableExport',
                htmlContent: false,
                ignoreColumn: [],
                ignoreRow: [],
                jspdf: {
                    orientation: 'p',
                    unit: 'pt',
                    format: 'a4', // jspdf page format or 'bestfit' for autmatic paper format selection
                    margins: { left: 20, right: 10, top: 10, bottom: 10 },
                    autotable: {
                        styles: {
                            cellPadding: 2,
                            rowHeight: 12,
                            fontSize: 8,
                            fillColor: 255,        // color value or 'inherit' to use css background-color from html table
                            textColor: 50,         // color value or 'inherit' to use css color from html table
                            fontStyle: 'normal',   // normal, bold, italic, bolditalic or 'inherit' to use css font-weight and fonst-style from html table
                            overflow: 'ellipsize', // visible, hidden, ellipsize or linebreak
                            halign: 'left',        // left, center, right
                            valign: 'middle'       // top, middle, bottom
                        },
                        headerStyles: {
                            fillColor: [52, 73, 94],
                            textColor: 255,
                            fontStyle: 'bold',
                            halign: 'center'
                        },
                        alternateRowStyles: {
                            fillColor: 245
                        },
                        tableExport: {
                            onAfterAutotable: null,
                            onBeforeAutotable: null,
                            onTable: null
                        }
                    }
                },
                numbers: {
                    html: {
                        decimalMark: '.',
                        thousandsSeparator: ','
                    },
                    output: {
                        decimalMark: '.',
                        thousandsSeparator: ','
                    }
                },
                onCellData: null,
                onCellHtmlData: null,
                outputMode: 'file', // 'file', 'string' or 'base64'
                tbodySelector: 'tr',
                theadSelector: 'tr',
                tableName: 'myTableName',
                type: 'csv', // 'csv', 'txt', 'sql', 'json', 'xml', 'excel', 'doc', 'png' or 'pdf'
                worksheetName: 'xlsWorksheetName'
            };

            var FONT_ROW_RATIO = 1.15;
            var el = this;
            var DownloadEvt = null;
            var $hrows = [];
            var $rows = [];
            var rowIndex = 0;
            var rowspans = [];
            var trData = '';

            $.extend(true, defaults, options);

            if (defaults.type == 'csv' || defaults.type == 'txt') {

                var csvData = "";
                var rowlength = 0;
                rowIndex = 0;

                function CollectCsvData(tgroup, tselector, rowselector, length) {

                    $rows = $(el).find(tgroup).first().find(tselector);
                    $rows.each(function () {
                        trData = "";
                        ForEachVisibleCell(this, rowselector, rowIndex, length + $rows.length,
                                function (cell, row, col) {
                                    trData += csvString(cell, row, col) + defaults.csvSeparator;
                                });
                        trData = $.trim(trData).substring(0, trData.length - 1);
                        if (trData.length > 0) {

                            if (csvData.length > 0)
                                csvData += "\n";

                            csvData += trData;
                        }
                        rowIndex++;
                    });

                    return $rows.length;
                }

                rowlength += CollectCsvData('thead', defaults.theadSelector, 'th,td', rowlength);
                rowlength += CollectCsvData('tbody', defaults.tbodySelector, 'td', rowlength);
                CollectCsvData('tfoot', defaults.tbodySelector, 'td', rowlength);

                csvData += "\n";

                //output
                if (defaults.consoleLog === true)
                    console.log(csvData);

                if (defaults.outputMode === 'string')
                    return csvData;

                if (defaults.outputMode === 'base64')
                    return base64encode(csvData);

                try {
                    var blob = new Blob([csvData], { type: "text/" + (defaults.type == 'csv' ? 'csv' : 'plain') + ";charset=utf-8" });
                    saveAs(blob, defaults.fileName + '.' + defaults.type, (defaults.type != 'csv' || defaults.csvUseBOM === false));
                }
                catch (e) {
                    downloadFile(defaults.fileName + '.' + defaults.type,
                                 'data:text/' + (defaults.type == 'csv' ? 'csv' : 'plain') + ';charset=utf-8,' + ((defaults.type == 'csv' && defaults.csvUseBOM) ? '\ufeff' : ''),
                                 csvData);
                }

            } else if (defaults.type == 'sql') {

                // Header
                rowIndex = 0;
                var tdData = "INSERT INTO `" + defaults.tableName + "` (";
                $hrows = $(el).find('thead').first().find(defaults.theadSelector);
                $hrows.each(function () {
                    ForEachVisibleCell(this, 'th,td', rowIndex, $hrows.length,
                            function (cell, row, col) {
                                tdData += "'" + parseString(cell, row, col) + "',";
                            });
                    rowIndex++;
                    tdData = $.trim(tdData);
                    tdData = $.trim(tdData).substring(0, tdData.length - 1);
                });
                tdData += ") VALUES ";
                // Row vs Column
                $rows = $(el).find('tbody').first().find(defaults.tbodySelector);
                $rows.each(function () {
                    trData = "";
                    ForEachVisibleCell(this, 'td', rowIndex, $hrows.length + $rows.length,
                            function (cell, row, col) {
                                trData += "'" + parseString(cell, row, col) + "',";
                            });
                    if (trData.length > 3) {
                        tdData += "(" + trData;
                        tdData = $.trim(tdData).substring(0, tdData.length - 1);
                        tdData += "),";
                    }
                    rowIndex++;
                });

                tdData = $.trim(tdData).substring(0, tdData.length - 1);
                tdData += ";";

                //output
                if (defaults.consoleLog === true)
                    console.log(tdData);

                if (defaults.outputMode === 'string')
                    return tdData;

                if (defaults.outputMode === 'base64')
                    return base64encode(tdData);

                try {
                    var blob = new Blob([tdData], { type: "text/plain;charset=utf-8" });
                    saveAs(blob, defaults.fileName + '.sql');
                }
                catch (e) {
                    downloadFile(defaults.fileName + '.sql',
                                 'data:application/sql;charset=utf-8,',
                                 tdData);
                }

            } else if (defaults.type == 'json') {

                var jsonHeaderArray = [];
                $hrows = $(el).find('thead').first().find(defaults.theadSelector);
                $hrows.each(function () {
                    var jsonArrayTd = [];

                    ForEachVisibleCell(this, 'th,td', rowIndex, $hrows.length,
                            function (cell, row, col) {
                                jsonArrayTd.push(parseString(cell, row, col));
                            });
                    jsonHeaderArray.push(jsonArrayTd);
                });

                var jsonArray = [];
                $rows = $(el).find('tbody').first().find(defaults.tbodySelector);
                $rows.each(function () {
                    var jsonArrayTd = [];

                    ForEachVisibleCell(this, 'td', rowIndex, $hrows.length + $rows.length,
                            function (cell, row, col) {
                                jsonArrayTd.push(parseString(cell, row, col));
                            });

                    if (jsonArrayTd.length > 0 && (jsonArrayTd.length != 1 || jsonArrayTd[0] != ""))
                        jsonArray.push(jsonArrayTd);

                    rowIndex++;
                });

                var jsonExportArray = [];
                jsonExportArray.push({ header: jsonHeaderArray, data: jsonArray });

                var sdata = JSON.stringify(jsonExportArray);

                if (defaults.consoleLog === true)
                    console.log(sdata);

                if (defaults.outputMode === 'string')
                    return sdata;

                if (defaults.outputMode === 'base64')
                    return base64encode(sdata);

                try {
                    var blob = new Blob([sdata], { type: "application/json;charset=utf-8" });
                    saveAs(blob, defaults.fileName + '.json');
                }
                catch (e) {
                    downloadFile(defaults.fileName + '.json',
                                 'data:application/json;charset=utf-8;base64,',
                                 sdata);
                }

            } else if (defaults.type === 'xml') {

                rowIndex = 0;
                var xml = '<?xml version="1.0" encoding="utf-8"?>';
                xml += '<tabledata><fields>';

                // Header
                $hrows = $(el).find('thead').first().find(defaults.theadSelector);
                $hrows.each(function () {

                    ForEachVisibleCell(this, 'th,td', rowIndex, $rows.length,
                            function (cell, row, col) {
                                xml += "<field>" + parseString(cell, row, col) + "</field>";
                            });
                    rowIndex++;
                });
                xml += '</fields><data>';

                // Row Vs Column
                var rowCount = 1;
                $rows = $(el).find('tbody').first().find(defaults.tbodySelector);
                $rows.each(function () {
                    var colCount = 1;
                    trData = "";
                    ForEachVisibleCell(this, 'td', rowIndex, $hrows.length + $rows.length,
                            function (cell, row, col) {
                                trData += "<column-" + colCount + ">" + parseString(cell, row, col) + "</column-" + colCount + ">";
                                colCount++;
                            });
                    if (trData.length > 0 && trData != "<column-1></column-1>") {
                        xml += '<row id="' + rowCount + '">' + trData + '</row>';
                        rowCount++;
                    }

                    rowIndex++;
                });
                xml += '</data></tabledata>';

                //output
                if (defaults.consoleLog === true)
                    console.log(xml);

                if (defaults.outputMode === 'string')
                    return xml;

                if (defaults.outputMode === 'base64')
                    return base64encode(xml);

                try {
                    var blob = new Blob([xml], { type: "application/xml;charset=utf-8" });
                    saveAs(blob, defaults.fileName + '.xml');
                }
                catch (e) {
                    downloadFile(defaults.fileName + '.xml',
                                 'data:application/xml;charset=utf-8;base64,',
                                 xml);
                }

            } else if (defaults.type == 'excel' || defaults.type == 'xls' || defaults.type == 'word' || defaults.type == 'doc') {

                var MSDocType = (defaults.type == 'excel' || defaults.type == 'xls') ? 'excel' : 'word';
                var MSDocExt = (MSDocType == 'excel') ? 'xls' : 'doc';
                var MSDocSchema = (MSDocExt == 'xls') ? 'xmlns:x="urn:schemas-microsoft-com:office:excel"' : 'xmlns:w="urn:schemas-microsoft-com:office:word"';

                rowIndex = 0;
                var docData = '<table><thead>';
                // Header
                $hrows = $(el).find('thead').first().find(defaults.theadSelector);
                $hrows.each(function () {
                    trData = "";
                    ForEachVisibleCell(this, 'th,td', rowIndex, $hrows.length,
                            function (cell, row, col) {
                                if (cell != null) {
                                    trData += '<th style="';
                                    for (var styles in defaults.excelstyles) {
                                        if (defaults.excelstyles.hasOwnProperty(styles)) {
                                            trData += defaults.excelstyles[styles] + ': ' + $(cell).css(defaults.excelstyles[styles]) + ';';
                                        }
                                    }
                                    if ($(cell).is("[colspan]"))
                                        trData += '" colspan="' + $(cell).attr('colspan');
                                    if ($(cell).is("[rowspan]"))
                                        trData += '" rowspan="' + $(cell).attr('rowspan');
                                    trData += '">' + parseString(cell, row, col) + '</th>';
                                }
                            });
                    if (trData.length > 0)
                        docData += '<tr>' + trData + '</tr>';
                    rowIndex++;
                });

                docData += '</thead><tbody>';

                // Row Vs Column
                $rows = $(el).find('tbody').first().find(defaults.tbodySelector);
                $rows.each(function () {
                    trData = "";
                    ForEachVisibleCell(this, 'td', rowIndex, $hrows.length + $rows.length,
                            function (cell, row, col) {
                                if (cell != null) {
                                    trData += '<td style="';
                                    for (var styles in defaults.excelstyles) {
                                        if (defaults.excelstyles.hasOwnProperty(styles)) {
                                            trData += defaults.excelstyles[styles] + ': ' + $(cell).css(defaults.excelstyles[styles]) + ';';
                                        }
                                    }
                                    if ($(cell).is("[colspan]"))
                                        trData += '" colspan="' + $(cell).attr('colspan');
                                    if ($(cell).is("[rowspan]"))
                                        trData += '" rowspan="' + $(cell).attr('rowspan');
                                    trData += '">' + parseString(cell, row, col) + '</td>';
                                }
                            });
                    if (trData.length > 0)
                        docData += '<tr>' + trData + '</tr>';
                    rowIndex++;
                });

                if (defaults.displayTableName)
                    docData += '<tr><td></td></tr><tr><td></td></tr><tr><td>' + parseString($('<p>' + defaults.tableName + '</p>')) + '</td></tr>';

                docData += '</tbody></table>';

                if (defaults.consoleLog === true)
                    console.log(docData);

                var docFile = '<html xmlns:o="urn:schemas-microsoft-com:office:office" ' + MSDocSchema + ' xmlns="http://www.w3.org/TR/REC-html40">';
                docFile += '<meta http-equiv="content-type" content="application/vnd.ms-' + MSDocType + '; charset=UTF-8">';
                docFile += "<head>";
                if (MSDocType === 'excel') {
                    docFile += "<!--[if gte mso 9]>";
                    docFile += "<xml>";
                    docFile += "<x:ExcelWorkbook>";
                    docFile += "<x:ExcelWorksheets>";
                    docFile += "<x:ExcelWorksheet>";
                    docFile += "<x:Name>";
                    docFile += defaults.worksheetName;
                    docFile += "</x:Name>";
                    docFile += "<x:WorksheetOptions>";
                    docFile += "<x:DisplayGridlines/>";
                    docFile += "</x:WorksheetOptions>";
                    docFile += "</x:ExcelWorksheet>";
                    docFile += "</x:ExcelWorksheets>";
                    docFile += "</x:ExcelWorkbook>";
                    docFile += "</xml>";
                    docFile += "<![endif]-->";
                }
                docFile += "</head>";
                docFile += "<body>";
                docFile += docData;
                docFile += "</body>";
                docFile += "</html>";

                if (defaults.consoleLog === true)
                    console.log(docFile);

                if (defaults.outputMode === 'string')
                    return docFile;

                if (defaults.outputMode === 'base64')
                    return base64encode(docFile);

                try {
                    var blob = new Blob([docFile], { type: 'application/vnd.ms-' + defaults.type });
                    saveAs(blob, defaults.fileName + '.' + MSDocExt);
                }
                catch (e) {
                    downloadFile(defaults.fileName + '.' + MSDocExt,
                                 'data:application/vnd.ms-' + MSDocType + ';base64,',
                                 docFile);
                }

            } else if (defaults.type == 'png') {
                html2canvas($(el)[0], {
                    allowTaint: true,
                    background: '#fff',
                    onrendered: function (canvas) {

                        var image = canvas.toDataURL();
                        image = image.substring(22); // remove data stuff

                        var byteString = atob(image);
                        var buffer = new ArrayBuffer(byteString.length);
                        var intArray = new Uint8Array(buffer);

                        for (var i = 0; i < byteString.length; i++)
                            intArray[i] = byteString.charCodeAt(i);

                        if (defaults.consoleLog === true)
                            console.log(byteString);

                        if (defaults.outputMode === 'string')
                            return byteString;

                        if (defaults.outputMode === 'base64')
                            return base64encode(image);

                        try {
                            var blob = new Blob([buffer], { type: "image/png" });
                            saveAs(blob, defaults.fileName + '.png');
                        }
                        catch (e) {
                            downloadFile(defaults.fileName + '.png',
                                         'data:image/png;base64,',
                                         image);
                        }
                    }
                });

            } else if (defaults.type == 'pdf') {
                if (defaults.jspdf.autotable === false) {
                    var addHtmlOptions = {
                        dim: {
                            w: getPropertyUnitValue($(el).first().get(0), 'width', 'mm'),
                            h: getPropertyUnitValue($(el).first().get(0), 'height', 'mm')
                        },
                        pagesplit: false
                    };

                    var doc = new jsPDF(defaults.jspdf.orientation, defaults.jspdf.unit, defaults.jspdf.format);
                    doc.addHTML($(el).first(),
                            defaults.jspdf.margins.left,
                            defaults.jspdf.margins.top,
                            addHtmlOptions,
                            function () {
                                jsPdfOutput(doc);
                            });
                    //delete doc;
                }
                else {
                    // pdf output using jsPDF AutoTable plugin
                    // https://github.com/simonbengtsson/jsPDF-AutoTable

                    var teOptions = defaults.jspdf.autotable.tableExport;

                    // When setting jspdf.format to 'bestfit' tableExport tries to choose
                    // the minimum required paper format and orientation in which the table
                    // (or tables in multitable mode) completely fits without column adjustment
                    if (typeof defaults.jspdf.format === 'string' && defaults.jspdf.format.toLowerCase() === 'bestfit') {
                        var pageFormats = {
                            'a0': [2383.94, 3370.39], 'a1': [1683.78, 2383.94],
                            'a2': [1190.55, 1683.78], 'a3': [841.89, 1190.55],
                            'a4': [595.28, 841.89]
                        };
                        var rk = '', ro = '';
                        var mw = 0;

                        $(el).filter(':visible').each(function () {
                            if ($(this).css('display') != 'none') {
                                var w = getPropertyUnitValue($(this).get(0), 'width', 'pt');

                                if (w > mw) {
                                    if (w > pageFormats['a0'][0]) {
                                        rk = 'a0';
                                        ro = 'l';
                                    }
                                    for (var key in pageFormats) {
                                        if (pageFormats.hasOwnProperty(key)) {
                                            if (pageFormats[key][1] > w) {
                                                rk = key;
                                                ro = 'l';
                                                if (pageFormats[key][0] > w)
                                                    ro = 'p';
                                            }
                                        }
                                    }
                                    mw = w;
                                }
                            }
                        });
                        defaults.jspdf.format = (rk == '' ? 'a4' : rk);
                        defaults.jspdf.orientation = (ro == '' ? 'w' : ro);
                    }

                    // The jsPDF doc object is stored in defaults.jspdf.autotable.tableExport,
                    // thus it can be accessed from any callback function
                    teOptions.doc = new jsPDF(defaults.jspdf.orientation,
                            defaults.jspdf.unit,
                            defaults.jspdf.format);

                    $(el).filter(function () {
                        return $(this).data("tableexport-display") != 'none' &&
                               ($(this).is(':visible') ||
                                $(this).data("tableexport-display") == 'always');
                    }).each(function () {
                        var colKey;
                        var rowIndex = 0;

                        teOptions.columns = [];
                        teOptions.rows = [];
                        teOptions.rowoptions = {};

                        // onTable: optional callback function for every matching table that can be used
                        // to modify the tableExport options or to skip the output of a particular table
                        // if the table selector targets multiple tables
                        if (typeof teOptions.onTable === 'function')
                            if (teOptions.onTable($(this), defaults) === false)
                                return true; // continue to next iteration step (table)

                        // each table works with an own copy of AutoTable options
                        defaults.jspdf.autotable.tableExport = null;  // avoid deep recursion error
                        var atOptions = $.extend(true, {}, defaults.jspdf.autotable);
                        defaults.jspdf.autotable.tableExport = teOptions;

                        atOptions.margin = {};
                        $.extend(true, atOptions.margin, defaults.jspdf.margins);
                        atOptions.tableExport = teOptions;

                        // Fix jsPDF Autotable's row height calculation
                        if (typeof atOptions.beforePageContent !== 'function') {
                            atOptions.beforePageContent = function (data) {
                                if (data.pageCount == 1) {
                                    var all = data.table.rows.concat(data.table.headerRow);
                                    all.forEach(function (row) {
                                        if (row.height > 0) {
                                            row.height += (2 - FONT_ROW_RATIO) / 2 * row.styles.fontSize;
                                            data.table.height += (2 - FONT_ROW_RATIO) / 2 * row.styles.fontSize;
                                        }
                                    });
                                }
                            }
                        }

                        if (typeof atOptions.createdHeaderCell !== 'function') {
                            // apply some original css styles to pdf header cells
                            atOptions.createdHeaderCell = function (cell, data) {

                                if (typeof teOptions.columns[data.column.dataKey] != 'undefined') {
                                    var col = teOptions.columns[data.column.dataKey];
                                    cell.styles.halign = col.style.align;
                                    if (atOptions.styles.fillColor === 'inherit')
                                        cell.styles.fillColor = col.style.bcolor;
                                    if (atOptions.styles.textColor === 'inherit')
                                        cell.styles.textColor = col.style.color;
                                    if (atOptions.styles.fontStyle === 'inherit')
                                        cell.styles.fontStyle = col.style.fstyle;
                                }
                            }
                        }

                        if (typeof atOptions.createdCell !== 'function') {
                            // apply some original css styles to pdf table cells
                            atOptions.createdCell = function (cell, data) {
                                var rowopt = teOptions.rowoptions[data.row.index + ":" + data.column.dataKey];

                                if (typeof rowopt != 'undefined' && typeof rowopt.style != 'undefined') {
                                    cell.styles.halign = rowopt.style.align;
                                    if (atOptions.styles.fillColor === 'inherit')
                                        cell.styles.fillColor = rowopt.style.bcolor;
                                    if (atOptions.styles.textColor === 'inherit')
                                        cell.styles.textColor = rowopt.style.color;
                                    if (atOptions.styles.fontStyle === 'inherit')
                                        cell.styles.fontStyle = rowopt.style.fstyle;
                                }
                            }
                        }

                        if (typeof atOptions.drawHeaderCell !== 'function') {
                            atOptions.drawHeaderCell = function (cell, data) {
                                var colopt = teOptions.columns[data.column.dataKey];

                                if (colopt.style.hasOwnProperty("hidden") != true || colopt.style.hidden !== true)
                                    return prepareAutoTableText(cell, data, colopt);
                                else
                                    return false; // cell is hidden
                            }
                        }

                        if (typeof atOptions.drawCell !== 'function') {
                            atOptions.drawCell = function (cell, data) {
                                var rowopt = teOptions.rowoptions[data.row.index + ":" + data.column.dataKey];
                                return prepareAutoTableText(cell, data, rowopt);
                            }
                        }

                        // collect header and data rows
                        $hrows = $(this).find('thead').find(defaults.theadSelector);
                        $hrows.each(function () {
                            colKey = 0;

                            ForEachVisibleCell(this, 'th,td', rowIndex, $hrows.length,
                                    function (cell, row, col) {
                                        var obj = getCellStyles(cell);
                                        obj.title = parseString(cell, row, col);
                                        obj.key = colKey++;
                                        teOptions.columns.push(obj);
                                    });
                            rowIndex++;
                        });

                        var rowCount = 0;
                        $rows = $(this).find('tbody').find(defaults.tbodySelector);
                        $rows.each(function () {
                            var rowData = [];
                            colKey = 0;

                            ForEachVisibleCell(this, 'td', rowIndex, $hrows.length + $rows.length,
                                    function (cell, row, col) {
                                        if (typeof teOptions.columns[colKey] === 'undefined') {
                                            // jsPDF-Autotable needs columns. Thus define hidden ones for tables without thead
                                            var obj = {
                                                title: '',
                                                key: colKey,
                                                style: {
                                                    hidden: true
                                                }
                                            };
                                            teOptions.columns.push(obj);
                                        }
                                        if (cell !== null) {
                                            teOptions.rowoptions[rowCount + ":" + colKey++] = getCellStyles(cell);
                                        }
                                        else {
                                            var obj = $.extend(true, {}, teOptions.rowoptions[rowCount + ":" + (colKey - 1)]);
                                            obj.colspan = -1;
                                            teOptions.rowoptions[rowCount + ":" + colKey++] = obj;
                                        }

                                        rowData.push(parseString(cell, row, col));
                                    });
                            if (rowData.length) {
                                teOptions.rows.push(rowData);
                                rowCount++
                            }
                            rowIndex++;
                        });

                        // onBeforeAutotable: optional callback function before calling
                        // jsPDF AutoTable that can be used to modify the AutoTable options
                        if (typeof teOptions.onBeforeAutotable === 'function')
                            teOptions.onBeforeAutotable($(this), teOptions.columns, teOptions.rows, atOptions);

                        teOptions.doc.autoTable(teOptions.columns, teOptions.rows, atOptions);

                        // onAfterAutotable: optional callback function after returning
                        // from jsPDF AutoTable that can be used to modify the AutoTable options
                        if (typeof teOptions.onAfterAutotable === 'function')
                            teOptions.onAfterAutotable($(this), atOptions);

                        // set the start position for the next table (in case there is one)
                        defaults.jspdf.autotable.startY = teOptions.doc.autoTableEndPosY() + atOptions.margin.top;
                    });

                    jsPdfOutput(teOptions.doc);

                    teOptions.columns.length = 0;
                    teOptions.rows.length = 0;
                    delete teOptions.doc;
                    teOptions.doc = null;
                }
            }

            function ForEachVisibleCell(tableRow, selector, rowIndex, rowCount, cellcallback) {
                if ($.inArray(rowIndex, defaults.ignoreRow) == -1 &&
                    $.inArray(rowIndex - rowCount, defaults.ignoreRow) == -1) {

                    var $row = $(tableRow).filter(function () {
                        return $(this).data("tableexport-display") != 'none' &&
                               ($(this).is(':visible') ||
                                $(this).data("tableexport-display") == 'always' ||
                                $(this).closest('table').data("tableexport-display") == 'always');
                    }).find(selector);

                    var rowColspan = 0;

                    $row.each(function (colIndex) {
                        if ($(this).data("tableexport-display") == 'always' ||
                            ($(this).css('display') != 'none' &&
                             $(this).css('visibility') != 'hidden' &&
                             $(this).data("tableexport-display") != 'none')) {
                            if ($.inArray(colIndex, defaults.ignoreColumn) == -1 &&
                                $.inArray(colIndex - $row.length, defaults.ignoreColumn) == -1) {
                                if (typeof (cellcallback) === "function") {
                                    var c, Colspan = 0;
                                    var r, Rowspan = 0;

                                    // handle rowspans from previous rows
                                    if (typeof rowspans[rowIndex] != 'undefined' && rowspans[rowIndex].length > 0) {
                                        for (c = 0; c <= colIndex; c++) {
                                            if (typeof rowspans[rowIndex][c] != 'undefined') {
                                                cellcallback(null, rowIndex, c);
                                                delete rowspans[rowIndex][c];
                                                colIndex++;
                                            }
                                        }
                                    }

                                    if ($(this).is("[colspan]")) {
                                        Colspan = parseInt($(this).attr('colspan'));
                                        rowColspan += Colspan > 0 ? Colspan - 1 : 0;
                                    }

                                    if ($(this).is("[rowspan]"))
                                        Rowspan = parseInt($(this).attr('rowspan'));

                                    // output content of current cell
                                    cellcallback(this, rowIndex, colIndex);

                                    // handle colspan of current cell
                                    for (c = 0; c < Colspan - 1; c++)
                                        cellcallback(null, rowIndex, colIndex + c);

                                    // store rowspan for following rows
                                    if (Rowspan) {
                                        for (r = 1; r < Rowspan; r++) {
                                            if (typeof rowspans[rowIndex + r] == 'undefined')
                                                rowspans[rowIndex + r] = [];

                                            rowspans[rowIndex + r][colIndex + rowColspan] = "";

                                            for (c = 1; c < Colspan; c++)
                                                rowspans[rowIndex + r][colIndex + rowColspan - c] = "";
                                        }
                                    }
                                }
                            }
                        }
                    });
                }
            }

            function jsPdfOutput(doc) {
                if (defaults.consoleLog === true)
                    console.log(doc.output());

                if (defaults.outputMode === 'string')
                    return doc.output();

                if (defaults.outputMode === 'base64')
                    return base64encode(doc.output());

                try {
                    var blob = doc.output('blob');
                    saveAs(blob, defaults.fileName + '.pdf');
                }
                catch (e) {
                    downloadFile(defaults.fileName + '.pdf',
                                 'data:application/pdf;base64,',
                                 doc.output());
                }
            }

            function prepareAutoTableText(cell, data, cellopt) {
                var cs = 0;
                if (typeof cellopt != 'undefined')
                    cs = cellopt.colspan;

                if (cs >= 0) {
                    // colspan handling
                    var cellWidth = cell.width;
                    var textPosX = cell.textPos.x;
                    var i = data.table.columns.indexOf(data.column);

                    for (var c = 1; c < cs; c++) {
                        var column = data.table.columns[i + c];
                        cellWidth += column.width;
                    }

                    if (cs > 1) {
                        if (cell.styles.halign === 'right')
                            textPosX = cell.textPos.x + cellWidth - cell.width;
                        else if (cell.styles.halign === 'center')
                            textPosX = cell.textPos.x + (cellWidth - cell.width) / 2;
                    }

                    cell.width = cellWidth;
                    cell.textPos.x = textPosX;

                    if (typeof cellopt != 'undefined' && cellopt.rowspan > 1) {
                        if (cell.styles.valign === 'middle')
                            cell.textPos.y = cell.textPos.y + (cell.height * (cellopt.rowspan - 1)) / 2;
                        else if (cell.styles.valign === 'bottom')
                            cell.textPos.y += (cellopt.rowspan - 1) * cell.height;

                        cell.height = cell.height * cellopt.rowspan;
                    }

                    // fix jsPDF's calculation of text position
                    if (cell.styles.valign === 'middle' || cell.styles.valign === 'bottom') {
                        var splittedText = typeof cell.text === 'string' ? cell.text.split(/\r\n|\r|\n/g) : cell.text;
                        var lineCount = splittedText.length || 1;
                        if (lineCount > 2)
                            cell.textPos.y -= ((2 - FONT_ROW_RATIO) / 2 * data.row.styles.fontSize) * (lineCount - 2) / 3;
                    }
                    return true;
                }
                else
                    return false; // cell is hidden (colspan = -1), don't draw it
            }

            function escapeRegExp(string) {
                return string.replace(/([.*+?^=!:${}()|\[\]\/\\])/g, "\\$1");
            }

            function replaceAll(string, find, replace) {
                return string.replace(new RegExp(escapeRegExp(find), 'g'), replace);
            }

            // Takes a string and encapsulates it (by default in double-quotes) if it
            // contains the csv field separator, spaces, or linebreaks.
            function csvString(cell, rowIndex, colIndex) {
                var result = '';

                if (cell != null) {
                    var dataString = parseString(cell, rowIndex, colIndex);

                    var csvValue = (dataString === null || dataString == '') ? '' : dataString.toString();

                    if (dataString instanceof Date)
                        result = defaults.csvEnclosure + dataString.toLocaleString() + defaults.csvEnclosure;
                    else {
                        result = replaceAll(csvValue, defaults.csvEnclosure, defaults.csvEnclosure + defaults.csvEnclosure);

                        if (result.indexOf(defaults.csvSeparator) >= 0 || /[\r\n ]/g.test(result))
                            result = defaults.csvEnclosure + result + defaults.csvEnclosure;
                    }
                }

                return result;
            }

            function parseNumber(value) {
                value = value || "0";
                value = replaceAll(value, defaults.numbers.html.decimalMark, '.');
                value = replaceAll(value, defaults.numbers.html.thousandsSeparator, '');

                return typeof value === "number" || jQuery.isNumeric(value) !== false ? value : false;
            }


            function parseString(cell, rowIndex, colIndex) {
                var result = '';

                if (cell != null) {
                    var $cell = $(cell);
                    var htmlData = $cell.html();

                    if (typeof defaults.onCellHtmlData === 'function')
                        htmlData = defaults.onCellHtmlData($cell, rowIndex, colIndex, htmlData);

                    if (defaults.htmlContent === true) {
                        result = $.trim(htmlData);
                    }
                    else {
                        var text = htmlData.replace(/\n/g, '\u2028').replace(/<br\s*[\/]?>/gi, '\u2060');
                        var obj = $('<div/>').html(text).contents();
                        text = '';
                        $.each(obj.text().split("\u2028"), function (i, v) {
                            if (i > 0)
                                text += " ";
                            text += $.trim(v);
                        });

                        $.each(text.split("\u2060"), function (i, v) {
                            if (i > 0)
                                result += "\n";
                            result += $.trim(v).replace(/\u00AD/g, ""); // remove soft hyphens
                        });

                        if (defaults.numbers.html.decimalMark != defaults.numbers.output.decimalMark ||
                            defaults.numbers.html.thousandsSeparator != defaults.numbers.output.thousandsSeparator) {
                            var number = parseNumber(result);

                            if (number !== false) {
                                var frac = ("" + number).split('.');
                                if (frac.length == 1)
                                    frac[1] = "";
                                var mod = frac[0].length > 3 ? frac[0].length % 3 : 0;

                                result = (number < 0 ? "-" : "") +
                                         (defaults.numbers.output.thousandsSeparator ? ((mod ? frac[0].substr(0, mod) + defaults.numbers.output.thousandsSeparator : "") + frac[0].substr(mod).replace(/(\d{3})(?=\d)/g, "$1" + defaults.numbers.output.thousandsSeparator)) : frac[0]) +
                                         (frac[1].length ? defaults.numbers.output.decimalMark + frac[1] : "");
                            }
                        }
                    }

                    if (defaults.escape === true) {
                        result = escape(result);
                    }

                    if (typeof defaults.onCellData === 'function') {
                        result = defaults.onCellData($cell, rowIndex, colIndex, result);
                    }
                }

                return result;
            }

            function hyphenate(a, b, c) {
                return b + "-" + c.toLowerCase();
            }

            function rgb2array(rgb_string, default_result) {
                var re = /^rgb\((\d{1,3}),\s*(\d{1,3}),\s*(\d{1,3})\)$/;
                var bits = re.exec(rgb_string);
                var result = default_result;
                if (bits)
                    result = [parseInt(bits[1]), parseInt(bits[2]), parseInt(bits[3])];
                return result;
            }

            function getCellStyles(cell) {
                var a = getStyle(cell, 'text-align');
                var fw = getStyle(cell, 'font-weight');
                var fs = getStyle(cell, 'font-style');
                var f = '';
                if (a == 'start')
                    a = getStyle(cell, 'direction') == 'rtl' ? 'right' : 'left';
                if (fw >= 700)
                    f = 'bold';
                if (fs == 'italic')
                    f += fs;
                if (f == '')
                    f = 'normal';
                return {
                    style: {
                        align: a,
                        bcolor: rgb2array(getStyle(cell, 'background-color'), [255, 255, 255]),
                        color: rgb2array(getStyle(cell, 'color'), [0, 0, 0]),
                        fstyle: f
                    },
                    colspan: (parseInt($(cell).attr('colspan')) || 0),
                    rowspan: (parseInt($(cell).attr('rowspan')) || 0)
                };
            }

            // get computed style property
            function getStyle(target, prop) {
                try {
                    if (window.getComputedStyle) { // gecko and webkit
                        prop = prop.replace(/([a-z])([A-Z])/, hyphenate);  // requires hyphenated, not camel
                        return window.getComputedStyle(target, null).getPropertyValue(prop);
                    }
                    if (target.currentStyle) { // ie
                        return target.currentStyle[prop];
                    }
                    return target.style[prop];
                }
                catch (e) {
                }
                return "";
            }

            function getPropertyUnitValue(target, prop, unit) {
                var baseline = 100;  // any number serves

                var value = getStyle(target, prop);  // get the computed style value

                var numeric = value.match(/\d+/);  // get the numeric component
                if (numeric !== null) {
                    numeric = numeric[0];  // get the string

                    var temp = document.createElement("div");  // create temporary element
                    temp.style.overflow = "hidden";  // in case baseline is set too low
                    temp.style.visibility = "hidden";  // no need to show it

                    target.parentElement.appendChild(temp); // insert it into the parent for em, ex and %

                    temp.style.width = baseline + unit;
                    var factor = baseline / temp.offsetWidth;

                    target.parentElement.removeChild(temp);  // clean up

                    return (numeric * factor);
                }
                return 0;
            }

            function downloadFile(filename, header, data) {

                var ua = window.navigator.userAgent;
                if (ua.indexOf("MSIE ") > 0 || !!ua.match(/Trident.*rv\:11\./)) {
                    // Internet Explorer (<= 9) workaround by Darryl (https://github.com/dawiong/tableExport.jquery.plugin)
                    // based on sampopes answer on http://stackoverflow.com/questions/22317951
                    // ! Not working for json and pdf format !
                    var frame = document.createElement("iframe");

                    if (frame) {
                        document.body.appendChild(frame);
                        frame.setAttribute("style", "display:none");
                        frame.contentDocument.open("txt/html", "replace");
                        frame.contentDocument.write(data);
                        frame.contentDocument.close();
                        frame.focus();

                        frame.contentDocument.execCommand("SaveAs", true, filename);
                        document.body.removeChild(frame);
                    }
                }
                else {
                    var DownloadLink = document.createElement('a');

                    if (DownloadLink) {
                        DownloadLink.style.display = 'none';
                        DownloadLink.download = filename;

                        if (header.toLowerCase().indexOf("base64,") >= 0)
                            DownloadLink.href = header + base64encode(data);
                        else
                            DownloadLink.href = encodeURIComponent(header + data);

                        document.body.appendChild(DownloadLink);

                        if (document.createEvent) {
                            if (DownloadEvt == null)
                                DownloadEvt = document.createEvent('MouseEvents');

                            DownloadEvt.initEvent('click', true, false);
                            DownloadLink.dispatchEvent(DownloadEvt);
                        }
                        else if (document.createEventObject)
                            DownloadLink.fireEvent('onclick');
                        else if (typeof DownloadLink.onclick == 'function')
                            DownloadLink.onclick();

                        document.body.removeChild(DownloadLink);
                    }
                }
            }

            function utf8Encode(string) {
                string = string.replace(/\x0d\x0a/g, "\x0a");
                var utftext = "";
                for (var n = 0; n < string.length; n++) {
                    var c = string.charCodeAt(n);
                    if (c < 128) {
                        utftext += String.fromCharCode(c);
                    }
                    else if ((c > 127) && (c < 2048)) {
                        utftext += String.fromCharCode((c >> 6) | 192);
                        utftext += String.fromCharCode((c & 63) | 128);
                    }
                    else {
                        utftext += String.fromCharCode((c >> 12) | 224);
                        utftext += String.fromCharCode(((c >> 6) & 63) | 128);
                        utftext += String.fromCharCode((c & 63) | 128);
                    }
                }
                return utftext;
            }

            function base64encode(input) {
                var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
                var output = "";
                var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
                var i = 0;
                input = utf8Encode(input);
                while (i < input.length) {
                    chr1 = input.charCodeAt(i++);
                    chr2 = input.charCodeAt(i++);
                    chr3 = input.charCodeAt(i++);
                    enc1 = chr1 >> 2;
                    enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
                    enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
                    enc4 = chr3 & 63;
                    if (isNaN(chr2)) {
                        enc3 = enc4 = 64;
                    } else if (isNaN(chr3)) {
                        enc4 = 64;
                    }
                    output = output +
                            keyStr.charAt(enc1) + keyStr.charAt(enc2) +
                            keyStr.charAt(enc3) + keyStr.charAt(enc4);
                }
                return output;
            }

            return this;
        }
    });
})(jQuery);